Beyonce Knowles and Jay-Z have taken their daughter on her first vacation

The couple - who celebrated their fourth wedding anniversary last week - have been enjoying the sunshine on the Caribbean island of St. Barts with three-month-old Blue Ivy over the weekend, and took the tot for a day trip on a yacht.

As well as doting on the youngster - whose head was covered to protect her from the sun - Beyonce, 30, and her 42-year-old spouse have also been able to have quality time alone.

The couple were seen strolling hand in hand before soaking up the sun on the beach.

Both were clad in black swimwear and were prepared for the day, toting an ice bucket containing a bottle of wine and several bottles of water, while the `Otis` rapper was also seen sipping from a coconut.

The break comes days after it was claimed the pair renewed their wedding vows in a midnight ceremony to mark their anniversary on April 4.

Beyonce and Jay-Z reaffirmed their commitment to one another in a "moving" ceremony in front of guests including Oprah Winfrey, Will Smith and his wife Jada Pinkett Smith.

The couple are said to have exchanged rings during the vow renewal, with Jay - whose real name is Shawn Carter - spotted at the Jacob and Co. jewellery store in New York the following day.

A source said: "I know he checked out coloured diamonds, the rare blue `Lumina` in particular."